Hoist



Aug' 15, 1950 w. H. HAMPTON ETAL 2,518,776

x-xorscvl Filed June 16, 1947 2 Sheets-Sheet 1 Y /f me/M5044 /von Wez'gan All@ 15, 1950 w. H. HAMPTON ETAL 2,518,776

HOIST Filed June 16, 1947 2 Sheets-Sheet 2 HW We yan mi Y Patented Aug. l5, 1950 g UNITED vSTAT HOIST William Hiram Hampton and Herman W. Y Weigand, Leavenworth, Kans.

.Application June 16, 1947, Serial No. 755,002

c claims.,V (ci. 212-48) 1 This invention relates to counterbalanced hoists and more particularly to an improved hoist having means for securing the counterbalance weight to the beam of the hoist when the hoist is not in use.

lt is an object of this invention to provide an improved hoist of the kind to be more particularly described hereinafter, which is especially adapted for use in hoisting milk cans from the cooling troughs and loading the cans on a truck.

Another object of this invention is to provide a hoist of this kind having hooks which may be readily engaged with the handles of a milk can and having a counterbalance or weight on the rope or cable substantially equal to the weight of a filled milk can so that the can may be raised from its cooler with veryv little eiort on the part of the operator.

.In the use of counterbalanced hoists of this kind, when the milk can is removed from its hooks, the counterweight will drop and requires as much effort of the operator to hold it up for securing a second can as it would to actually raise the can. It is,therefore, an object of this invention to provide a latch on the beam and weight to hold the weight in its raised position independent of the supporting cable or rope so that the second can may be hooked on the hoist with little effort.

Stillanother object of this invention is to provide a means for releasing the weight from the beam to counterbalance the weight of the loaded milk can. The release is so constructed and arranged that it may be readily accessible to the operator.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and thenmore particularly pointed out in the appended claims.

In the drawings,

Figure 1 is a side elevation, partly broken away, of a counterbalanced hoist constructed according Ato an embodiment oi this invention,

Figure 2 is a longitudinal section taken on the line 2-2 of Figure 1,

Figure 3 is a transverse section taken on the line 3-3 of Figure 1,

Figure 4 is a horizontal section taken on the line 4-4 of Figure 1,

Figure 5 is a fragmentary enlarged detail view, partly in section, ofl an article gripping hook,

Figure 6 is a horizontal section taken on the line 6-,6-of Figure 1,

Figure 7 is anV enlarged fragmentary view,

2 partly in section, of the weight supporting hook.v Referring to the drawings, the numeral I0 designates generally a stationary support -for a counterbalanced hoist particularly adapted for;

, raising milk cans or the like from their cooling vats, and for loading the cans on a truck. The counterbalanced hoist II is formed with a beam I2 having an article gripping member I4 supported on a flexible member I5 at one end of` the beam, and a weight IS on the flexible member at the other end of the beam, for counterbalancing the weight of the milk cans or othery articles to -be raised by the' article gripping means I4. Y n

The beam I2 is formed of a pair of horizontally spaced apart beam members Il having a pulleyI I8 rotatably supported between the members I1 at one end. A second pulley I9 is rotatably supe. ported betweenrthe beam forming m-embers I1 at the opposite end thereof. A flexible member I54 is trained about the pulleys IB and I9 and exf.

tends downwardly on each end of the beam. One end of the rope or cable I5 is fixed to the beam I2, as at 2li. The cable I5, extending downwardly between the pulley I8 and the fixed endv 2li, forms substantially a loop as ZI.

The article gripping member I4 is formed with a pulley 22 aboutwhich the cable l'engages-in the loop 2I, to provide additional leverage for raising the milk can or other article. The weight, I6 is fixed to the other end of the rope or cable I5 Yand may be one-half the weight of theA ar ticle to be raised by the member I4. The article gripping member I4 is formed of a pair of spaced; apart plates 24, having the pulley 22 rotatably; supported therebetween. The plates 24 are elon; gated and extend outwardly from each side of,`

the pul1ey .22. r

Article gripping hooks 25 are pivotally supand upwardly for engagingthe handles as 3G .oi a milk-can 3|.

the member I4. c Y

The beam I2 is rotatably supported from the.

iixed supportingmember I0 in the drawings, but it 4isunderstood that the rbeam may also be ro-j,

In this position the weight oi the bills and hook below the pivot 2S is suflicient to normally bias the bills 29 inwardly relative to tatably supported from a suitable track or other device whereby the entire hoist I I may be moved.

In the drawings, a bolt 32 extends through the xed support I I3 and a U-shaped hook or attaching member 34 is rotatably mounted on the lower end of the bolt, the beam' I2 being fixed to the lower end of the U-shaped member 34. The bolt 32 engages through the center of the bight 35 of the membel` 34 and a pair of washers or bearing plates 36 are loosely mounted about the bolt 32 between the bight 35 and the supporting member I0.

The downwardly extending arms 31 of the member 34 are fixed to the members I1 by bolts 38 extending through the lower end of the arms 31 and the beam I 2. For holding the beam members I1 in spaced apart relation at the center the same as at the ends, a spacer as 33 may be xed by the bolts 38 at this point.

The weight I6 is provided with a centrally disposed hook as 40 to which the ilexible member I5 is xed or attached. For holding the weight I6 in the raised position when no weight is carried by the member I4, there is provided a hook 4I pivotally carried by the beam I2 adjacent the pulley I9 for engagement with the hook or eye 4I]V of the weight I6. The hook 4I is pivotally mounted between the beam members I1 by a pivot pin 42 outwardly of the pulley I9. The bill 44 of the hook 4I is disposed inwardly relative to the shank 45 thereof for engagement with the eye or hook 40 of the weight I6.

The bill 44 is substantially flat and inclined upwardly and inwardly. The bill 44 is bifurcated, providing lingers 46 at the outer end thereof which are adapted to engage about the flexible member I5 in the normal hanging position of the hook 4I. In this manner the cable or rope I5 is adapted to freely pass between the fingers 46 inthe operation of the hoist, and when the eye or hook 40 of the weight I6 is moved upwardly, the engagement of the upper edge of the hook 40 with the lower surface of the bill 44 will rock the hook 4I outwardly until upon further movement of the eye 40 the bill will engage within the hook 40.

For releasing the weight I6 from the retaining hook 4I when a sufficient weight is supported by the member I4, an outwardly extending arm as- 41 isprovided. The arm 41 is fixed to the hook 4I at the pivot thereof and extends at right angles outwardly relative to the shank 45.

A rod 48 is loosely carried by the outer end of the arm 41 so that by upward movement of the rodv 48 the arm 41 will be rocked upwardly about the pivot 42 and the hook 4I will be moved outwardly to move the bill 44- outwardly and freefrom engagement with the hook or eye 46.

In the use and operation of this counterbalancedhoist, the hooks,A 25 of the member I4 are adapted to be engaged in the handles 33A of a milk can or the like` for raising the milk can` from its cooling tubs. The weight of the milk can 3| is substantially counterbalanced by thecounterbalance weight I6 so that vertical movement of the can canV be readily effected by an operator by raising the member I4 by grasping the handles 28 of the hooks 25. The milk can may then be freely moved to any desired position as for loading it on a truck or the like.

While the milk can v3| is depending from the beam I 2, the weight I6 may be fixed to theY beam I2 at the opposite end so that it will not fall free when the hooks 25 are disengaged from the handles 30. By moving the milk can downwardly or applying sufficient downward force on the flexible member I5, the weight I6 will be raised to its maximum upper position whereupon the hook 4I will engage within the eye 40. For releasing the weight I6 when it is again desired to utilize the weight as a counterbalance for the milk can, the tension between the hooks 46 and 4! may be released by suicient force on the ilexible member I5 at the opposite end of the beam and the rod 43 moved upwardly to disengage the hooks 40 and 4I.

We do not mean to confine ourselves to the 'exact details of construction herein disclosed, but claim al1 variations falling within the purview of the appended claims.

What we claim is:

l. A counterbalanced hoist comprising an elongated horizontal beam, means rotatably supporting said beam intermediate the length thereof, pulleys at each endy of said beam, a exible member trainedove-r said pulleys and extending downwardly therefrom, article engaging means carried by said member at one end of said beam, a counterweight on said ilexible member at the other end of said beam, a hook eye on'saidf weight, a depending hook pivotal-ly mounted on said beam for engagement with saidV hook eye, an upwardly inclined bill on said hook-engageable with said eye for rocking said hook upon upwardA movement of said weight, and meansbiasing said hook to eye engaging position.

2. A counte'rbalancedv hoist comprising an elongated beam, meansrotatably mounting said beam to a support, a pulley on each end of said beam', a flexible member trained over saidy pulleys and extending downwardly therefrom, oppositely` disposed inwardly biased article engaging hooks on said member below one end of said beam, a coun-- terweight on said member below the other lend of said beam, and correlated interengaging hook members carried by said counterweight and said beam for supporting said counterweight inde'- pendently of said flexible member.

3. A counterbalanced hoist as set forth in claimy 2 wherein one of said hook members' is pivoted, anV inclined bill on saidV pivoted hook member for engaging the other hook member upon upward: movement of said weight forA initially rocking said pivoted hook, and means biasing said hook' members into interconnected engagement upon further movement of said counterweight.

4. A counterbalanceas set forth in claim 2 including means for disengaging said hook mem-I bers.

5. A counterbalanced hoist comprising an elongated beam, means rotatably mounting said beam to a support, a pulley on each end of said beam, a 'exible member trained over said pulleys and extending downwardly therefrom, one endl' of said member being fixed to said beam, oppositely disposed inwardly biased article engaging hooks on said flexible member betweenY one pulley and the fixed end of said member below one end of said beam, a counterweight on said flexible member below the other endl ofsaidbeam, correlated interengaging hook members carriedl by said eounterweight and said beam for supporting said counterweight independently'of said flexible member, one of vsaid hook members being xed, the other of said hook members being pivoted, a bifurcated` bill on said pivoted hookv member, the ngers thereof engaging about-said flex-1 ible member on opposite sides thereof, said bifurcated bill being inclined whereby initialen'- Lgagement of said hook members on upward movement of said counterweight will eiect rocking of said pivoted member, and means biasing said pivoted member into interconnecting engagement with said xed hook member upon further movement of said counterweight upwardly.

6. In a counter balanced hoist including a Ibeam, pulley means on said beam, a flexible member trained over said pulley means, a counterweight, and means attaching said counterweight to one end of said flexible member including an eye on said counterweight, a hook pivotally mounted on said beam, an upwardly inclined bifurcated bill on said hook, the ngers of said bill being adapted to normally engage on opposite sides of said flexible member, an elongated angularly extending arm on the upper end of the shank of said hook and adapted to bias said bill 6 towards said flexible member whereby upper movement of said weight to engage said eye with said inclinedbill will rock said pivoted hook from the normalfposition thereof and further upward movement ofsaid weight will allow engagement of said hook in said eye.

WILLIAM H. HAMPTON. HERMAN W. WEIGAND.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 906,587 Van Wie Dec. 15, 1908 y 912,335 Van Wie Feb. 16. 1909 

